[{"data":1,"prerenderedAt":44},["Reactive",2],{"pc-questionbank-detail":3,"$W6AA6qpnyW":4,"pc-questionbank-topic-seo":5},null,[],{"questionbank":6,"topic":19,"access_notice":43},{"id":7,"name":8,"category_name":8,"category_path":9,"pay_type":18},298,"二建水利水电实务",[10,13,16],{"id":11,"name":12},368,"二级建造师题库",{"id":14,"name":15},372,"二建 专业工程管理与实务",{"id":17,"name":8},378,1,{"type_desc":20,"difficulty_desc":21,"chapter_name":22,"id":23,"questionbank_id":7,"parent_id":24,"type":18,"stem":25,"illustration":26,"option":27,"difficulty":18,"score":40,"chapter_id":41,"public_topic_id":42},"单选","简单","2015年二建水利水电实务真题（免费试用）",554516,0,"水泵铭牌上的效率是该泵的(  )效率。","",[28,31,34,37],{"key":29,"value":30},"A","最低",{"key":32,"value":33},"B","平均",{"key":35,"value":36},"C","最高",{"key":38,"value":39},"D","正常","1.00",1771,604179,"本页公开展示题干和选项，答案与解析需登录或开通后在刷题页查看。",1781694103765]